Stable marine vessel



April 24, 1951 R R MERO 2,550,298

STABLE MARINE VESSEL Filed Jan. 29, 1946 IN VEN TOR Patented Apr. 24,1951 UNITED STATES PATENT OFFICE f2,550,29s-- T STABLE MARINE VESSELFrederick B. Romero, Washington, D. 0.

Application January 29, 1946, Serial No. 643,981

. 1 The object of the invention is to'reduce rolling and pitching ofvessels on rough surfaced water, in heavy seas toprolong the period ofrolling and pitching; thereby producing a more stable vessel which issmoother and steadierfto 1 drawing wherein like reference charactersrefer to the same parts in the several views and in which: i

Fig. 1, is a side elevation partially in section.

Fig. 2, is an end elevation of the stern.

Fig. 3, is a plan view of theupper deck.

The upper deck I is integrally attached to the side shell plating 2 andstern plating, attention is invited to Fig. 2, wherein the upper sternplates are indicated at 3.

As illustrated in Figs. 1 and 2 the bottom of the hull is recessed alongthecenter line from a point forwardof amidships and approximately halfway to the bow, thence'rearwardly to the stern to form a central waterchannel 6, the top of which is defined by plating 4, stiffened bystiffener l1, and the sides by plating 5. A forward central keel 18,extends fromthe forward end of this channel 6, to the bow of the vessel.Said forward keel l8, has its flat bottom shaped so that its lateraledges follow long curved and diverging lines from the lower end of thebows stem rearwardly to the after end where channel 6, begins. The top 4of channel 6 begins at the end of the channel keel ill with a roundedup-.

for reasons appearing here below, extend fromthe forward end of thechannel 6, substantially to the stern'of the vessel. These side keelsI5, l6 are of appreciable thickness with vertical sides facing thechannel 6 and forming continuations of thechannel side plating 5. Theouter sides of keels [5 are set at an angle to the inner'side such thatthese keels are thicker where they join the hull than they are at theirlower edges.

6 Claims. (Cl. 11461) v in the usual manner.

The sides 2 are extensive and forward of the forward end of the centralchannel 6 extend from the sides of the deck I to the central keel l8.Throughout the length of channel 6 the sides 2 of the vessel extend in agenerally vertical plane from the sides of the deck I to the bottom ofthe vessel where they turn inward. become tangent to a generallyhorizontal plane and then sweep inwardly and upwardly terminating at the'outer'faces of side keels l5; l6.

' i This upward and inward sweep is of considerable proportion and formswith the outer faces of side keels 15, I6 V-shaped side channelsdesignated I9, 20 in the drawing. Two bilge keels I2, [3 one along eachturn of the bilge also extend approximately from a point in a transverseplane which includes the after end of the central keel l8 to the sternof the vessel, these keels are of lesser depth forward but curve to thegreater depth illustrated in Fig. 2.

As indicated on the drawing the central channel 6 ends adjacent thestern but suificiently forward of the extreme end of the vessel toprovide a widened channel of the same height as channel 6 and ofsufficient length to accommodate the balanced rudder 1 and permit it toturn The stock of the rudder 1 is supported above and below by supports8 and 9 respectively.

The hull portions on each side of the central channel 6 are tiedtogether and the hull strengthened by heavy flat bars l4 which extendfrom the bottom of the hull immediately adjacent the turns ofthe bilgesacross the V-shaped channels i9, 20 through the side keels l5, l6 andacross the channel 6. The fiat bars M are of appreciable width, areequally spaced and as illustrated in the drawing they lie in a planeimmediately along the bottom of the hull. Upon reference to the drawingit is noted that there are 5 of these elements. Various changes in sizeof the different parts may be made within the scope of the appendedclaims which limit the shape of the different parts so as to requirethat the finished vessels hulls appear, in their outside structuralforms, as shown, in the illustrative drawings accompanying thisspecification.

The vessel may be made of steel, steel alloys or wood and may includedecks as they prove necessary or desirable but these are not deemedessential to the invention, which is constructed according to principlesin naval architecture which include stress analysis requirements forsafety of human life and cargo at sea.

I, the inventor, am aware that the herewith disclosed marine vesselshull is of such unique shape in its structure when considered in itsentirety, that it fulfills the requirements of patentability as setforth in R. S. 4886; 35 U. S. C. 31, under rule 47 of the Rules ofPractice effective March 1, 1949, in the United States Patent Ofiice:therefore,

I claim,

1. A vessel adapted to ride steadily in a heavy sea having a hull, saidhull including sides and a bottom joining along a turn at the bilge ateach side, the bottom formed to provide a plurality of keels andchannels all extending longitudinally-- thereof, one of said keels lyingalong the. longi-- tudinal center line of the hull and extending fromthe bow to a point approximately half way to amidships and thereterminating in a channel, said channel extending to the stern of thevessel and of a depth to extend up to. the. designed load Water line, apair of keels lying directly along each side of said. channel andextending throughout the length thereof, a second pair of keels lyingalong the turn at the bilges also'extending along the length of saidcentral channel, and channels V-shaped in cross section alongeachside ofthe bottom each of the last mentioned channels lying between a keel atthe bilge and a keel at the side of the central channel.

2. A vessel as claimed in claim 1 including a balanced rudder within theafter end of said central channel.

3. A vessel as claimed in claim 1- including a plurality of fiat bars ofappreciable width lying in a common plane and extending from adjacenteach keel at the bilge across the V-shaped channels, the keels at theside of the central channel and across the central channel.

4. A vessel as claimed in claim 1 wherein the top of said centralchannel is flat and parallel to the bottom thereof substantiallythroughout the entire length of said channel.

5. A vessel as claimed in claim 1 wherein the sides of the keels alongthe central channel form continuations of the sides of said channel.

6. A vessel as claimed in claim 1 wherein the keels along side thecentral channel increase in thickness from the lower to the upper edgesthereof.

FREDERICK B. ROMERO.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS 375,416 Great Britain June 27, 1932

